CN213806395U - Prefabricated many elevator shafts - Google Patents
Prefabricated many elevator shafts Download PDFInfo
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- CN213806395U CN213806395U CN202022242845.5U CN202022242845U CN213806395U CN 213806395 U CN213806395 U CN 213806395U CN 202022242845 U CN202022242845 U CN 202022242845U CN 213806395 U CN213806395 U CN 213806395U
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- 238000009434 installation Methods 0.000 claims abstract description 71
- 210000001503 joint Anatomy 0.000 claims abstract description 56
- 229910000831 Steel Inorganic materials 0.000 claims description 31
- 239000010959 steel Substances 0.000 claims description 31
- 229910001294 Reinforcing steel Inorganic materials 0.000 claims description 4
- 239000004567 concrete Substances 0.000 claims description 3
- 238000010276 construction Methods 0.000 abstract description 22
- 238000000034 method Methods 0.000 description 6
- 238000004519 manufacturing process Methods 0.000 description 5
- 239000011449 brick Substances 0.000 description 4
- 238000009417 prefabrication Methods 0.000 description 3
- 238000009415 formwork Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000011150 reinforced concrete Substances 0.000 description 2
- 239000004793 Polystyrene Substances 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000006260 foam Substances 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000003032 molecular docking Methods 0.000 description 1
- 229920002223 polystyrene Polymers 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
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Abstract
The utility model discloses a prefabricated many elevartors shafts, including elevartor shaft installation unit, elevartor shaft installation unit includes at least one first prefab and two second prefabs, the both sides of first prefab all are equipped with the first dead zone of keeping away, one side of second prefab is equipped with the second and keeps away the dead zone, the lateral part of first prefab can dock with first prefab or second prefab, makes the first dead zone of keeping away and keeps away dead zone or first dead zone of keeping away and the second and keep away the butt joint of dead zone and be the elevator installing zone, elevartor shaft installation unit is formed along the horizontal direction butt joint in proper order by a second prefab, each first prefab and another second prefab. The utility model discloses a prefabricated many elevartors shafts has controllable, the construction convenience of quality, reduce cost and improves advantages such as security performance.
Description
Technical Field
The utility model relates to a prefabricated construction technical field of building especially relates to a prefabricated many elevartors shafts.
Background
In the building engineering, the elevator shaft is used as a very special part in the building, the technical requirement is strict, the construction process is complex, the safety guarantee is particularly important, and the flatness and the perpendicularity of the shaft wall directly influence the quality, the progress, the cost and other links of later-stage elevator installation after the elevator shaft is built. However, the elevator hoistway of the traditional frame structure usually adopts a brick masonry form, the masonry brick bodies are small in single pieces, and more brick bodies are needed to be combined, so that the masonry quality among the brick bodies is difficult to unify. And the space is narrow and small when the elevator shaft is under construction, and certain safety risk exists in the processes of installing scaffold, erecting the formwork on the spot of the ring beam, removing the formwork and removing the frame body.
SUMMERY OF THE UTILITY MODEL
The to-be-solved technical problem of the utility model is to overcome prior art not enough, provide a quality is controllable, construction convenience, reduce cost and improve the many prefabricated elevartors shafts of security performance.
In order to solve the technical problem, the utility model provides a technical scheme does:
the utility model provides a prefabricated multi-cylinder elevartor shaft, includes elevartor shaft installation unit, elevartor shaft installation unit includes at least one first prefab and two second prefabs, the both sides of first prefab all are equipped with the first dead zone of keeping away, one side of second prefab is equipped with the second and keeps away the dead zone, the lateral part of first prefab can dock with first prefab or second prefab, makes the first dead zone of keeping away and the first dead zone of keeping away or the first dead zone of keeping away and the second of keeping away and keeps away the butt joint for elevator installing zone, elevartor shaft installation unit is formed by a second prefab, each first prefab and another second prefab along the horizontal direction butt joint in proper order.
As a further improvement of the above technical solution:
the first prefabricated part comprises a first fixed wall and two first butt-joint walls, the two first butt-joint walls are prefabricated and fixed on two vertical end faces of the first fixed wall, two ends of the first butt-joint walls exceed two sides of the first fixed wall, and the two first butt-joint walls and the first fixed wall are surrounded to form a first space avoiding area located on two sides of the first fixed wall.
The second prefabricated part comprises a second fixed wall and two second butt joint walls, the two second butt joint walls are prefabricated and fixed on two vertical end faces of the second fixed wall, the two second butt joint walls extend towards one side of the second fixed wall, and the two second butt joint walls and the second fixed wall are surrounded to form a second space avoiding area located on the side of the second fixed wall.
The first fixing wall and the second fixing wall are consistent in structure, and the length of the first butt joint wall beyond the side face of the first fixing wall is consistent with the length of the second butt joint wall extending from the side face of the second fixing wall.
The first prefabricated member is in butt joint connection with a first butt joint wall of the first prefabricated member or a second butt joint wall of the second prefabricated member adjacent to the first butt joint wall; the butt joint walls which are mutually butted are provided with sunken structures, butt joint grooves are formed after the butt joint walls are butted, and the butt joint walls which are mutually butted are butted and fixed through first steel plates which are embedded into the butt joint grooves and fastened through fastening pieces.
At least one wall surface formed by butt joint of butt joint walls and enclosing the elevator installation area is provided with a door opening, and a jacking rib is propped between the side surface and the top surface of the door opening.
The elevator shaft installation units forming the prefabricated multi-elevator shaft are multiple and are arranged in the vertical direction, and beams are arranged between every two adjacent elevator shaft installation units at intervals.
The prefabricated multi-cylinder elevator shaft also comprises a T-shaped steel connecting piece, wherein the joint of the top parts of a horizontal steel plate and a vertical steel plate in the T-shaped steel connecting piece is embedded at the bottom of the elevator shaft installation unit, and the top part of the beam is provided with an installation groove corresponding to the T-shaped steel connecting piece; the elevator shaft mounting unit on the upper portion is filled with concrete through the mounting groove of the beam on the lower portion, and the extending portion of the T-shaped steel connecting piece pre-buried in the elevator shaft mounting unit on the upper portion is buried in the mounting groove to achieve splicing connection.
The elevator shaft installation unit comprises an elevator shaft installation unit body, wherein the bottom of the elevator shaft installation unit body is provided with a first steel plate, the top of the elevator shaft installation unit body is provided with a beam, the top of the beam is provided with a sunken structure, the sunken structures correspond to the top of the elevator shaft installation unit body, the elevator shaft installation unit body and the beam are adjacent from top to bottom, the elevator shaft installation unit body on the upper portion and the beam on the lower portion are butted to enable the sunken structures to be butted to form a splicing groove, and the sunken structures are butted and connected through a second steel plate which is arranged in the splicing groove and fastened through a fastening piece.
Corrugated pipes corresponding to the positions are pre-embedded in the top of each elevator shaft mounting unit and the bottom of each beam, the corrugated pipes are butted by the elevator shaft mounting units on the lower portion and the beams on the upper portion in the elevator shaft mounting units and the beams adjacent to each other vertically, and are connected in a butted mode through reinforcing steel bars embedded in the two sections of corrugated pipes.
Compared with the prior art, the utility model has the advantages of:
the utility model discloses a prefabricated many elevartors shafts, wherein elevartor shaft installation unit includes at least one first prefab and two second prefabs, and first prefab is the I shape cross-section, and its both sides all are equipped with the first dead zone of keeping away, and the second prefab is C type cross-section, and it only is equipped with the second in one side and keeps away the dead zone. During the butt joint, can dock two adjacent first prefabs, make two first taking off the empty district butt joint for the elevator installing zone to dock the first prefab and the second prefab of edge, make first taking off the empty district and the butt joint of second taking off the empty district is the elevator installing zone. In the installation and construction process, the elevator shaft installation unit is formed by sequentially butting one second prefabricated member, each first prefabricated member and the other second prefabricated member in the horizontal direction according to the butting mode.
The utility model discloses a prefabricated many elevartors shafts divide the elevartor shaft structure into a plurality of parts, and each part is prefabricated and forms, and the job site only need hoist and mount and fixed mounting according to the position, consequently compares in masonry structure, and its construction steps is simple and convenient, and the process is simple and easy, has saved the template consumptive material of traditional construction, more is applicable to the construction in narrow and small space to it also need not to set up and demolish too much construction auxiliary facilities to compare masonry structure construction, therefore the security performance is higher. In addition, the quality of the integrally prefabricated part structure is easier to control, the quality of a finished product is higher, the prefabrication cost is lower, and the installation efficiency is higher.
The utility model discloses with holistic elevartor shaft structure branch part prefabrication, prefabricated part volume is littleer, has reduced the requirement to lifting device. The split structure can also properly increase and decrease the number of the first prefabricated parts according to different constructed elevator shaft numbers, so that the construction of elevator shafts with two or three or more shafts is achieved, the prefabricated parts required by the construction of the elevator shafts with different shaft numbers are consistent in structure, the number of the molds of the prefabricated parts is greatly reduced, the production and manufacturing cost is further reduced, and the application range is wider; in addition, the error between the prefabricated parts manufactured by the same type of mould is lower, so that the installation is more convenient and reliable, and the quality of finished products is further improved.
Drawings
Fig. 1 is a schematic cross-sectional view of an elevator shaft mounting unit in a prefabricated multi-shaft elevator shaft according to the present invention;
fig. 2 is a schematic structural view of a first prefabricated member in the prefabricated multi-tube elevator shaft of the present invention;
fig. 3 is a schematic structural view of a second prefabricated member in the prefabricated multi-tube elevator shaft of the present invention;
fig. 4 is an installation schematic view of the prefabricated multi-tube elevator shaft of the present invention;
FIG. 5 is an enlarged view of the structure at A in FIG. 4;
fig. 6 to 8 are the utility model discloses an installation schematic diagram of elevartor shaft installation unit and roof beam in prefabricated many elevator shafts.
Illustration of the drawings: 1. an elevator shaft mounting unit; 11. a first preform; 111. a first keep-out area; 112. a first fixed wall; 113. a first abutment wall; 12. a second preform; 121. a second keep away empty area; 122. a second fixed wall; 123. a second docking wall; 13. an elevator installation area; 14. butting the grooves; 15. a fastener; 16. a first steel plate; 17. a door opening; 2. a beam; 21. mounting grooves; 3. t-shaped steel connecting pieces; 4. a second steel plate; 5. a bellows; 6. and (5) reinforcing steel bars.
Detailed Description
In order to facilitate understanding of the present invention, the present invention will be described more fully and specifically with reference to the accompanying drawings and preferred embodiments, but the scope of the present invention is not limited to the following specific embodiments.
Example (b):
as shown in fig. 1, the prefabricated multi-shaft elevator hoistway of the present embodiment includes an elevator hoistway installation unit 1, the elevator hoistway installation unit 1 includes at least one first prefabricated member 11 and two second prefabricated members 12, the first prefabricated member 11 has an i-shaped cross section, both sides of the first prefabricated member are provided with first space-avoiding regions 111, the second prefabricated member 12 has a C-shaped cross section, and only one side of the second space-avoiding region 121 is provided with the second space-avoiding region. During butt joint, two adjacent first prefabricated parts 11 can be in butt joint, two first clearance areas 111 are in butt joint to form an elevator installation area 13, the first prefabricated parts 11 at the edges are in butt joint with the second prefabricated parts 12, and the first clearance areas 111 and the second clearance areas 121 are in butt joint to form the elevator installation area 13. During installation and construction, the elevator shaft installation unit 1 is formed by sequentially and horizontally butting one second prefabricated member 12, each first prefabricated member 11 and the other second prefabricated member 12 according to the butting mode.
The prefabricated many elevartors shafts of this embodiment divide into a plurality of parts with the elevartor shaft structure, and each part is prefabricated and forms, and the job site only need hoist and mount and fixed mounting according to the position, consequently compares in masonry structure, and its construction step is simple and convenient, and the process is simple and easy, has saved the template consumptive material of traditional construction, more is applicable to the construction in narrow and small space to also need not to set up and demolish too much construction auxiliary facilities in comparison masonry structure construction, therefore the security performance is higher. In addition, the quality of the integrally prefabricated part structure is easier to control, the quality of a finished product is higher, the prefabrication cost is lower, and the installation efficiency is higher.
This embodiment is prefabricated whole elevartor shaft structure subtotal part, and prefabricated part volume is littleer, has reduced the requirement to lifting device. The split structure can also properly increase and decrease the number of the first prefabricated parts 11 according to different constructed elevator shaft numbers, so that the construction of elevator shafts with two or three or more shafts is achieved, the prefabricated parts required by the construction of the elevator shafts with different shaft numbers are consistent in structure, the number of the molds of the prefabricated parts is greatly reduced, the production and manufacturing cost is further reduced, and the application range is wider; in addition, the error between the prefabricated parts manufactured by the same type of mould is lower, so that the installation is more convenient and reliable, and the quality of finished products is further improved. The structure of the three-tube elevator shaft is shown in fig. 1, and is formed by splicing and connecting a second prefabricated member 12, a first prefabricated member 11 and a second prefabricated member 12 from left to right in sequence, and in other embodiments, the number of the first prefabricated members 11 can be increased or decreased as required.
In this embodiment, each prefabricated member is made of reinforced concrete. In order to further reduce the dead weight of each prefabricated member, the extruded polystyrene board can be embedded in each prefabricated member according to actual requirements, so that the weight caused by the consumption of reinforced concrete is reduced.
In this embodiment, as shown in fig. 2, the first prefabricated member 11 includes a first fixed wall 112 and two first butting walls 113, and the two first butting walls 113 are prefabricated and fixed on two opposite vertical end surfaces of the first fixed wall 112, so that the two first butting walls 113 are parallel to each other and perpendicular to the first fixed wall 112. Both ends of the first abutting wall 113 exceed both sides of the first fixing wall 112, so that the two first abutting walls 113 and the first fixing wall 112 are in an i-shaped structure, and a semi-surrounding structure at both sides of the i-shaped structure is surrounded to form the first keep-out area 111 at both sides of the first fixing wall 112.
In this embodiment, as shown in fig. 3, the second prefabricated member 12 includes a second fixed wall 122 and two second butt walls 123, and the two second butt walls 123 are prefabricated and fixed on two opposite vertical end surfaces of the second fixed wall 122, so that the two second butt walls 123 are parallel to each other and are perpendicular to the second fixed wall 122. The two second abutting walls 123 extend towards one side of the second fixing wall 122, and form a C-shaped structure together with the second fixing wall 122, and the C-shaped structure is enclosed into a second keep-out area 121 located at one side of the second fixing wall 122. The other side of the second fixed wall 122 is connected to the hoistway mounting wall surface.
In this embodiment, in order to ensure the rigidity of the prefabricated member, it is also possible to add reinforcing ribs of appropriate size, i.e. ribs on the walls of the prefabricated member shown in fig. 2 and 3, to each wall of the prefabricated member.
In this embodiment, the first fixing wall 112 and the second fixing wall 122 have the same structure, so as to ensure that the lengths and heights of the elevator installation areas 13 are the same, and the length of the first butting wall 113 beyond the side surface of the first fixing wall 112 is the same as the length of the second butting wall 123 extending from the side surface of the second fixing wall 122, so that the widths of the elevator installation areas 13 in the elevator hoistway installation unit 1 are the same, and the later-stage elevator installation is facilitated. In addition, two butt joint walls forming the wall surface in the width direction of the elevator installation area 13 respectively occupy half of the width of the elevator installation area 13, each elevator cylinder is reasonably split, the number of parts is guaranteed to be as small as possible, the hoisting and installation construction are convenient, the distance between the suspended end part and the fixed end part of each butt joint wall is made to be as short as possible, the structural strength is improved, the building requirement is met, and the damage to the parts caused by the dead weight in the hoisting process is effectively prevented.
In this embodiment, as shown in fig. 5, the first preform 11 is butt-jointed to the first butt-joint wall 113 of the first preform 11 adjacent thereto by the first butt-joint wall 113, and the marginal first preform 11 is butt-jointed to the second butt-joint wall 123 of the second preform 12 adjacent thereto by the first butt-joint wall 113. The butt joint walls which are in butt joint with each other are provided with sunken structures, butt joint grooves 14 are formed after butt joint of the butt joint walls, the butt joint walls which are in butt joint with each other are in butt joint and fixed through first steel plates 16 which are embedded into the butt joint grooves 14 and fastened through fastening pieces 15, and connection of adjacent prefabricated members is guaranteed through the first steel plates 16. In this embodiment, the butt groove 14 has a trapezoidal cross-sectional structure with a small bottom surface area and a large opening area, and the structure facilitates demolding of the forming mold in the production process. In this embodiment, a splicing seam of 20mm is reserved between adjacent prefabricated members, and waterproof glue and foam strips are filled in the seam after the installation is completed. The splice seam can be used for adjusting slight size error during installation, and the installation quality is guaranteed.
In this embodiment, as shown in fig. 4, at least one wall surface formed by abutting the abutting walls, which encloses the elevator installation area 13, is provided with a door opening 17, the door opening 17 corresponds to the position of the elevator door, and a supporting rib is supported between the side surface and the top surface of the door opening 17 to enhance the structural strength and ensure that the door opening 17 is not broken during installation and hoisting.
In this embodiment, the elevartor shaft installation unit 1 that constitutes prefabricated many elevartors shafts is a plurality of, and a plurality of elevartor shaft installation units 1 arrange along vertical direction, ensure to satisfy the high requirement of elevartor shaft. Beams 2 for bearing are arranged between the adjacent elevator shaft installation units 1 at intervals, and the structure of the beams 2 can be a superposed beam or a cast-in-place beam.
In this embodiment, as shown in fig. 6, the prefabricated multi-tube elevator shaft further includes a T-shaped steel connecting member 3, a joint between tops of a horizontal steel plate and a vertical steel plate in the T-shaped steel connecting member 3 is embedded in the bottom of the elevator shaft installation unit 1, and a mounting groove 21 corresponding to the T-shaped steel connecting member 3 is formed in the top of the beam 2; the elevator shaft installation unit 1 on the upper portion is filled with concrete through the installation groove 21 of the beam 2 on the lower portion, and the protruding portion of the T-shaped steel connecting piece 3 pre-embedded in the elevator shaft installation unit 1 on the upper portion is embedded in the installation groove 21 to achieve splicing connection.
In this embodiment, as shown in fig. 7, the bottom of the elevator shaft installation unit 1 and the top of the beam 2 are both provided with a concave structure corresponding to each other, and in the elevator shaft installation units 1 and the beams 2 adjacent to each other up and down, the elevator shaft installation unit 1 on the upper portion and the beam 2 on the lower portion are butted to make the concave structures butted into a splicing groove, and are butted and connected through a second steel plate 4 arranged in the splicing groove and fastened through a fastening member 15, wherein the second steel plate 4 is L-shaped steel.
In this embodiment, as shown in fig. 8, corrugated pipes 5 corresponding to the positions are embedded in the top of each elevator shaft installation unit 1 and the bottom of each beam 2, the corrugated pipes 5 are butted by butting the elevator shaft installation unit 1 at the lower part and the beams 2 at the upper part in the elevator shaft installation units 1 and the beams 2 adjacent to each other, and the corrugated pipes 5 are butted by butting reinforcing steel bars 6 embedded in two sections of the corrugated pipes 5.
The above description is only the preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above embodiments. For those skilled in the art, the modifications and changes obtained without departing from the technical idea of the present invention should be regarded as the protection scope of the present invention.
Claims (10)
1. A prefabricated multi-shaft elevator hoistway comprising an elevator hoistway mounting unit (1), characterized in that: elevator shaft installing unit (1) includes at least one first prefab (11) and two second prefabs (12), the both sides of first prefab (11) all are equipped with the first dead zone (111) of keeping away, one side of second prefab (12) is equipped with the second and keeps away dead zone (121), the lateral part of first prefab (11) can dock with first prefab (11) or second prefab (12), makes the first dead zone (111) of keeping away and the first dead zone (111) of keeping away or the first dead zone (111) of keeping away and the second and keeps away dead zone (121) butt joint for elevator installing zone (13), elevator shaft installing unit (1) is formed by a second prefab (12), each first prefab (11) and another second prefab (12) along the horizontal direction butt joint in proper order.
2. The prefabricated multi-tube elevator hoistway of claim 1, wherein: the first prefabricated member (11) comprises a first fixed wall (112) and two first butt-joint walls (113), the two first butt-joint walls (113) are prefabricated and fixed on two vertical end faces of the first fixed wall (112), two ends of each first butt-joint wall (113) exceed two sides of the first fixed wall (112), and the two first butt-joint walls (113) and the first fixed wall (112) are enclosed to form first space avoiding areas (111) located on two sides of the first fixed wall (112).
3. The prefabricated multi-tube elevator hoistway of claim 2, wherein: the second prefabricated part (12) comprises a second fixed wall (122) and two second butt-joint walls (123), the two second butt-joint walls (123) are prefabricated and fixed on two vertical end faces of the second fixed wall (122), the two second butt-joint walls (123) extend towards one side of the second fixed wall (122) and enclose with the second fixed wall (122) to form a second clearance area (121) located on the side of the second fixed wall (122).
4. The prefabricated multi-tube elevator hoistway of claim 3, wherein: the first fixing wall (112) and the second fixing wall (122) are consistent in structure, and the length of the first butt joint wall (113) beyond the side face of the first fixing wall (112) is consistent with the length of the second butt joint wall (123) extending from the side face of the second fixing wall (122).
5. The prefabricated multi-tube elevator hoistway of claim 3, wherein: the first prefabricated member (11) is in butt joint connection with a first butt joint wall (113) of the first prefabricated member (11) adjacent to the first butt joint wall (113) or a second butt joint wall (123) of the second prefabricated member (12); the butt joint walls which are mutually butted are provided with sunken structures, butt joint grooves (14) are formed after the butt joint of the butt joint walls, and the butt joint walls which are mutually butted are butted and fixed through first steel plates (16) which are embedded into the butt joint grooves (14) and fastened through fastening pieces (15).
6. The prefabricated multi-tube elevator hoistway of claim 5, wherein: at least one wall surface formed by butt joint of butt joint walls and enclosing the elevator installation area (13) is provided with a door opening (17), and a supporting rib is supported between the side surface and the top surface of the door opening (17).
7. The prefabricated multi-tube elevator hoistway of any of claims 1 to 6, wherein: the elevator shaft installation units (1) forming the prefabricated multi-cylinder elevator shaft are multiple, the elevator shaft installation units (1) are arranged in the vertical direction, and beams (2) are arranged between every two adjacent elevator shaft installation units (1).
8. The prefabricated multi-tube elevator hoistway of claim 7, wherein: the elevator hoistway structure is characterized by further comprising a T-shaped steel connecting piece (3), wherein the connecting part of the top parts of a horizontal steel plate and a vertical steel plate in the T-shaped steel connecting piece (3) is embedded in the bottom of the elevator hoistway mounting unit (1), and a mounting groove (21) corresponding to the T-shaped steel connecting piece (3) is formed in the top part of the beam (2); the elevator shaft mounting unit (1) on the upper portion is filled with concrete through the mounting groove (21) of the beam (2) on the lower portion, and the extending portion of the T-shaped steel connecting piece (3) pre-buried in the elevator shaft mounting unit (1) on the upper portion is buried in the mounting groove (21) to achieve splicing connection.
9. The prefabricated multi-tube elevator hoistway of claim 7, wherein: the elevator shaft installation unit comprises an elevator shaft installation unit (1), beams (2) and a concave structure, wherein the bottom of the elevator shaft installation unit (1) and the top of the beams (2) are provided with corresponding concave structures, the upper part and the lower part of the elevator shaft installation unit (1) and the beams (2) are adjacent to each other, the elevator shaft installation unit (1) on the upper part and the beams (2) on the lower part are butted to form a splicing groove, and the concave structures are butted and connected through second steel plates (4) which are arranged in the splicing groove and fastened through fasteners (15).
10. The prefabricated multi-tube elevator hoistway of claim 7, wherein: the corrugated pipes (5) corresponding to the positions are pre-embedded in the top of the elevator shaft mounting unit (1) and the bottom of the beam (2), the corrugated pipes (5) are butted by the elevator shaft mounting unit (1) at the lower part and the beam (2) at the upper part in the elevator shaft mounting unit (1) and the beam (2) adjacent to each other up and down, and are butted and connected through reinforcing steel bars (6) embedded into the two sections of corrugated pipes (5).
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| Application Number | Priority Date | Filing Date | Title |
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| CN202022242845.5U CN213806395U (en) | 2020-10-10 | 2020-10-10 | Prefabricated many elevator shafts |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202022242845.5U CN213806395U (en) | 2020-10-10 | 2020-10-10 | Prefabricated many elevator shafts |
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| CN213806395U true CN213806395U (en) | 2021-07-27 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112252660A (en) * | 2020-10-10 | 2021-01-22 | 湖南建工五建建筑工业化有限公司 | A prefabricated multi-tube elevator shaft |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112252660A (en) * | 2020-10-10 | 2021-01-22 | 湖南建工五建建筑工业化有限公司 | A prefabricated multi-tube elevator shaft |
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